Fiskars® Paper Trimmer Blade Refills are designed to work with the Fiskars® Personal Paper Trimmer. The carriages snap into the trimmer rail easily. Style I Triple Track Titanium 2pc- High profile Titanium coated blades are 3 times harder than stainless steel. Works with Fiskars triple track trimmer FSK5249. Keep out of reach of children, contact may result in injury.